Switch-lock.



A. P. SUNNERGREN.

Patented Dec. 4, 1917.

2 SHEETSSHEET 1.

2/ JPAHK H065 lMfFl/PIER A. P. SUNNERGREN.

SWITCH LOCK.

APPLICATION FILED NOV. 18. 1915. RENEWED APR. 30,1917.

1,248,572. Patentegl Dee. 4,1917.

' FIG SHEETS-SHEET 2.

Fig.3. 3

I WITNESSES E} {11 7 i" INVENTOR UNITED STATES PATENT OFFICE.

ARVID I. SUNNERGREN, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO AMERICAN AUTO LOCK COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF DELAWARE.

SWITCH-LOCK.

Specification of Letters Patent.

Patented Dec. 4, 1917.

Application filed November 18, 1915, Serial No. 62,223. Renewed April 30, 1917. Serial No. 165,605.

To all whom it may concern Be it known that I, ARVID P. SUNNERGREN, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Switch- Locks, of which the following is a specification.

My invention relates generally to locking devices, such as applied to the mechanism of such machines as automobiles, and more particularly relates to electric switches ar-' ranged in the form of a secret lock. The primary objects of the invention are to provide efficient means for rendering it impossible to operate the mechanism of a motorcar or the like, by breaking the electric circuits used in the operation, so that they may not be re-made by one unfamiliar with the lock; to produce an improved and efficient form of electric switch for this purpose, and an improved form of combination lock; to provide for locking several parts of the mechanism simultaneously, and. to provide for an electric locking device which does not waste electric current. The invention is illustrated in the accompanying drawings in which,-

Figure 1 is a diagram showing the electric connections of my improved switch lock; Fig. 2 is a central longitudinal section of the permutation lock itself, and Fig. 3 is a front end elevation. Fig. l is a longitudinal section on the line (at), (4:), in Fig. 6. Fig. 5 is a cross section on the line (5), (5), in Fig. 2. Figs. 6, 7, and 8 are cross sections respectively on the lines (6), (7), and (8) in Fig. 4. Fig. 9 is a development of the inside surface of the insulated casing of the look, as shown in the other figures. I

In view of the custom of users of automobiles leaving them on the street where they are liable to be moved by unauthorized persons, it is of great importance to be able to quickly and efiiciently throw the mechanism into a condition where it cannot be operated in order to move the machine. The easiest way to accomplish this result is to provide for throwing the electric connections out of order by means of a secret lock switch. Briefly, I provide an electric switch in the form of a combination look at a convenient place on the machine, and by means of this lock I make orbreak the circuits of the sparking devices, and of a lock for the hood of the machine, or other convenient mechanism, the circuits being arranged so that they can only be made again by arranging the combination lock in a certain ivay unknown to those unfamiliar with the Thus referring first to Fig. 1, which is a diagram, we will suppose the locking device L is connected by post 11 to the battery 10, and that in a certain position of a switch indicated by dotted lines at 12, the lock be ing set by a certain known combination, the current connection is from pin 11 to pin 13, through lead 1% to pin 15, thence to a primary coil 16, interrupting device 17, and return lead 18 to the battery. Around the primary 16 is a secondary 19, which connects with the distributing device 20 and a set of spark plugs 21, completing the circuit by the lead 22. (It will be understood that the distributing device 20 is merely a constantly moving switch driven by any convenient part of the machine, as by being geared to the shaft of a magneto as shown at 37 in the lower part of this figure.) Meantime the battery current divides at the post 13, and by leads 23 and 24, excites the solenoid coils 25 and 26, whose cores on being lifted operate to raise the bell crank levers 27 and 2S, and thereby release the catches H, H, which hold down the hoods on the two sides of the machine, as indicated in dotted line. The return circuits from these solenoid coils are through leads 29 and 30, which are provided with switches 31 and 32 respectively, so that the battery circuit is broken except when the current is being actually used.

When the switch 12 is in another position the connection between the posts 13 and 15 is broken, and a connection is made between the posts 33 and 33, which by the leads 3 1 and 35 (either one of which is the ground), make the circuit of magneto 36, whose high tension winding it will be understood is connected through a distributer 37 to a series of sparking devices 38 in any usual and convenient manner.

Referring now to Figs. 2 to 9, the lock may be generally stated to be a series of disks arranged to be turned in a certain combination of angular positions, in which positions the circuits therethrough are made as above described, by connections with stationary electrodes.

Supposing the part marked B to be a switch board or other convenient mounting, there is attached to it a metallic cup-shaped casing 39, within which is a thick cylinder 40 composed of an insulating material such as wood or fiber. Located within this cylin-' der 40 are a series of disks 41, 42, 43, also made of insulating material. These disks are mounted upon a shaft 44 which has a bearing in a stationary metallic disk 45 at the back end, and at the front end an indirect hearing by bushing 54 of disk 43 in the dial plate 46, and passing freely through a glass casing 47. This shaft 44 slides freely through a metallic bushing 48 in the disk 41, but this. bushing has a radial slot 49 on its outer end, arranged to engage a pin 50 fixed on the shaft 44, when the shaft is moved lon gitudinally to the left for this purpose. The shaft 44 also moves freely through a metallic bushing 51 in the disk 42, but this bushing is cut out with a slot 52, for about three-quarters of its circumference with an intervening shouldered portion 51*, and Within this slot is arranged a pin 53 fixed on the shaft 44, so that the shaft may not make a complete revolution without also moving disk 42.

The disk 43 engages the central shaft 44 indirectly, by means of a metallic bushing 54 formed therein with a rectangular opening which fits a rectangular enlargement 55 of the shaft 44. The outer end of shaft 44 terminates in an operating handle 56 which may be conveniently pulled outward and revolved as desired, while the bushing 54 carries a pointer arm 57 traveling over the dial plate 46 under the covering glass 47. The glass in turn is held down by the protruding flange 58 of a cover plate 59, to which the cylinder 40 may be conveniently secured by a number of screws 60.

It will be understood therefore that if the handle 56 be pulled out until the pin 50 engages the slot 49, the disk 41 may be moved withfthe shaft 44 in either direction. Upon pushing the handle 56 and shaft 44 inward again until pin 50 is released, the disks 42 and 43 may be revolved in either direction a desired distance, disk 42 with and disk 43 without lost motion of shaft 44-. Upon reversing the rotation the disk 43 alone will move, as long as anything less than three quarters of a turn is covered, during which space the pin 53 plays freely in the recess 52.

Each one of these disks 41, 42, 43, has fixed to it a metallic disk (41, 42 43 re spectively), which at all times is in engagement with a metallic spring contact bar 60 as 'appearsmore clearly in Figs. 4 and 6. The bar 60 is set into proper openings in the insulating cylinder 40, and is normally pressed inward by spring 61 so that it may rece'd'e and fall into the depressions in the corrugated periphery of each of the disks (41, 42*, 43), as shown clearly in Fig. 6. Each of these disks has a. small space cut out in the periphery and filled by a plug of insulating material (as 42 in the disk 42, shown in Fig. 6)-so that at one position of each of these metallic disks the contact between the disk and through the bar 60 and spring 61 with the cylinder 39, is broken. At all other times these disks are grounded through such connection.

Each of the disks 4'1, 42, 43, is provided with an inset contact block, just like the block 43 as shown in Fig. 5 in the disk 43. This rests upona compression spring 43 so that it is normally protruded outward and at the proper position makes a connection with the pairs of contact blocks set in the inner face of the insulating cylinder 40, as shown by the diagram in Fig. 9. In this latter figure, suppose the lead of the battery 10 in Fig. l to be connected to the post 11, then in one position, the connected contactplug 11 Will be connected with the plug 63 (Fig. 9) by one of the bridge blocks, as 41; by another one of these blocks as 42 the plug 63 will be connected to plug 64; while by still another block as 43 the plug 64 will be connected to plug 13, which has an outside connection (72 in Fig. 5) with plug 15 and the post 15, from which the current goes to the interrupter and the spark plug, as indicated in Fig. 1. Meantime the plug 13, connected directly to a terminal 13, simultanecusly places the battery in circuit with the solenoids and of the hood locks as shown in Fig. '1.

Preferably arranged below the dial of the lock as shown in Fig. 3, and pivoted on the cover plate 59, I mount a switch bar 65 operated by handle 66, and carrying with it in its movements a metallic lever 67, lying under the plate 59, pivoted on the pin 68 and moved with the bar 65 by means of a pin 69 passing through a slot 70 in the plate The switch 67 has an inset of insulating material, 71, arranged as shown more clearly in Fig. 5, so that in one position, it will engage a spring contact 72 attached to a block 15" set in the cylinder 40, and connected to post 15, thus causing it by such depression to come in contact with the block13, connected to post 13. lVhen the switch 67 is in its central position as shown, the small spring 73 is in contact with the metallic lever 67 and therefore with the ground, and by means of plug 40 thus grounds the disks 42 and 4 3. l/Vhen it is made to rest on the insulating block 71, turned in either position it removes the ground connection. By this means the circuit between the battery or the magneto and the spark plugs is broken, without disturbing the normal operation or setting of the lock.

It will be observed that in all positions except the certain predetermined position,

of the three disks 41, 42, 43, all of the connections are broken, so that there is no possibility of putting the battery or the hood locks in circuit, and also in all positions but the predetermined position, the magneto is grounded; that in the movement of these disks with the corrugated edges under the bar 60 the noise and feeling will be the same at all positions, so as to prevent detection of the proper position of the disks. It will also be noted that all three of the disks are moved by means of a single shaft; and that in every position they are held by reason of the corrugated form of the peripheries of the metallic disks al i2, 43*. Moreover, without changing the combination of the lock the operator may shift from the use of the battery to the use of the magneto for his spark, by moving handle to one position, or in another position of the handle may short-circuit the magneto and open the battery circuit, and prevent any possibility of a spark, without changing the combination of the lock.

Having thus described my invention and illustrated its use, what I claim is the following:

1. An electric permutation lock switch for.

automobiles comprising a casing having internally arranged contacts, a plurality of revoluble disks in the casing, a reciprocable rotatable shaft centrally engaging all of said disks, one positively, another with rotatable lost motion, and another by longitudinal movement, and adapted to rotatably move a different disk or different disks according to its longitudinal position, and a plurality of electric circuits connected respectively with said internal contacts and with said disks, said circuits being open in all but one predetermined position of all the disks, substantially as described.

2. A lock for the circuits of a sparking device and ahood lock, comprising a cylinder with internal contacts connected with said circuits, and a plurality of combination disks adapted, to be vconnected to said circuits and all operated by a single shaft sliding and revolving in said disks, and having positive rotatable engagement with one, intermittent lost motion engagement with another, and reciprocable engagement and disengagement with another of said disks, substantially as described. I

3. In an electric lock switch, the combination of a cylinder of insulating material having metallic inserts on its inner face, a series of revoluble disks having contact insets on their peripheries adapted to make circuit in a particular position, and a reciprocable and Copies of this patent may be obtained for rotatable shaft positively engaging one of said disks by rotation, intermittently engaging another of said disks by rotation with lost motion, and reciprocably engaging another of said disks, and adapted to impart rotation to all of said disks by its several movements, to set them to a predetermined position.

4. An electric locking switch comprising a cylinder with internal contacts, a plurality of revoluble disks having contacts adapted to engage said cylinder contacts in certain predetermined positions, and a revoluble and reciprocable shaft in the disks having a separate element arranged to engage and co-act with each particular disk adapted to turn each of them to a predetermined position to make the said circuits in one particular position and no other, substantially as described.

5. An electric lock switch comprising a metallic grounded cover, an insulated cylinder in the cover, a series of metallic insets on the inner face of the cylinder, a spring actuated block engaging the cover and connected to ground and projecting through the wall of the insulating cylinder, a central reciprocable and revoluble shaft, a series of disks having peripheral contact recesses adapted to engage said block in different positions and hub cavities, said reciprocable shaft having a series of separate elements adapted to engage and co-act with the hub cavity of each particular disk in certain positions.

6. A switch lock comprising the combination of a metallic grounded cover, an insulated cylinder in said cover, a series of metallic insets on its inner face, and a spring actuated contact block engaging the cover and thus connected to ground and projecting through the wall of the insulating cylinder, a central shaft, a plurality of disks on said shaft at all times engaging said inwardly projecting contact and provided each with a contact block, said disk contacts being.

adapted to make a complete circuit when the disks are in a particular position, and a series of individual separate connections between the disks and the central shaft by which one or more of said disks may be moved independently of the others or other for such purpose, substantially as described. In testimony whereof I have hereunto aflixed my signature in the presence of two witnesses.

ARVID P. SUNNERGREN. Witnesses:

W. A. HEOKMAN, O. M. CLARKE.

five cents each, by addressing the Commissioner of latentl. Washington, D. G. 

